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  • Question

  • In class C operation of an amplifier circuit, the collector current exists for


  • Options
  • A. 360° of input wave
  • B. 180° of input wave
  • C. more than 180° of input wave
  • D. less than 180° of input wave

  • Correct Answer
  • less than 180° of input wave 

    Explanation
    In class C operation output is in the form of short duration pulses.

    Analog Electronics problems

    Search Results

    • 1. In figure what is value of IC if ?dc = 100. Neglect VBE

    • Options
    • A. 5 mA
    • B. 5 ?A
    • C. 10 mA
    • D. 10 ?A
      • Discuss
    • 2. In figure the saturation collector current is

    • Options
    • A.
    • B.
    • C.
    • D. none of the above
      • Discuss
    • 3. Which of the following oscillators is suitable for frequencies in the range of mega hertz?

    • Options
    • A. RC phase shift
    • B. Wien bridge
    • C. Hartley
    • D. Both (a) and (c)
      • Discuss
    • 4. Negative feedback reduces noise originating at the amplifier input.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. In figure v1 = 8 V and v2 = 8 V. Which diode will conduct?

    • Options
    • A. D1 only
    • B. D2 only
    • C. Both D1 and D2
    • D. Neither D1 nor D2
      • Discuss
    • 6. Assertion (A): For large signal variations an amplifier circuit has to be analysed graphically

      Reason (R): The output characteristics of a transistor is nonlinear.


    • Options
    • A. Both A and R are correct and R is correct explanation for A
    • B. Both A and R are correct but R is not correct explanation for A
    • C. A is correct R is wrong
    • D. A is wrong R is correct
      • Discuss
    • 7. In figure, VEB = 0.6 V, ? = 99. Then VC and IC are

    • Options
    • A. 9.3 V and 1.98 mA respectively
    • B. 4.6 V and 1.98 mA respectively
    • C. 9.3 V and 0.02 mA respectively
    • D. 4.6 V and 0.02 mA respectively
      • Discuss
    • 8. The output V0 in figure is

    • Options
    • A. -100 V
    • B. -100 mV
    • C. 10 V
    • D. 10 mV
      • Discuss
    • 9. DC amplifiers have a tendency to be unstable.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. Study the circuit of figure and examine the following statements

      1. It is an active low pass finer.
      2. It is a second order filter.
      3. The change in gain is 40 dB/decade.
      Which of the above statements are correct?

    • Options
    • A. 1, 2 and 3
    • B. 1 and 2
    • C. 1 and 3
    • D. 2 and 3
      • Discuss

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